SWAN 2 Concentrator Installation and Support Guide

Installing a SWAN 2 Concentrator

SWAN 2 Concentrator Installation and Support Guide—429593-010

2-11

Connect the Ethernet Cables

The back panel of the SWAN 2 concentrator contains two RJ-45 10/100 Base-T

twisted-pair Ethernet ports, which are used to connect the SWAN 2 concentrator to the

NonStop BladeSystem, NonStop NS-series (G4SAs only) system, or NonStop S-series

system.

Ethernet connections to the system can be made:

•

Directly to Ethernet adapters (E4SAs, FESAs, GESAs, or G4SAs) using a

customer-supplied crossover cable (E4SAS, FESAS, and GESAs are not

supported on BladeSystems.)

•

Indirectly through customer-supplied, industry-standard Ethernet switches, hubs, or

routers (see Connect the Ethernet Cables to a Switch, Ethernet Hub, or Router on

page 2-17)

•

For maximum fault-tolerance, HP recommends that you connect a SWAN 2

concentrator directly to an Ethernet adapter rather than through an Ethernet hub. If

you use an Ethernet hub, you must carefully monitor the state of the hub.

Note. If you connect a SWAN 2 concentrator directly to an Ethernet adapter, you derive

the benefit of the 30-second AC power backup provided by the SWAN 2 concentrator

battery. If you connect to an Ethernet hub, you derive this benefit only if the hub is

power-protected through an uninterruptible power supply (UPS) or battery. In the event of

AC power loss all communications with a SWAN 2 concentrator is lost if the hubs are not

power-protected.